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#include <catch.hpp>
#include <algorithm>
#include <chrono>
#include <stdexcept>
#include <string>
#include <thread>
#include <type_traits>
#include <utility>
#include "unit_test_util.hh"
#include <libcuckoo/cuckoohash_map.hh>
TEST_CASE("iterator types", "[iterator]") {
using Ltbl = IntIntTable::locked_table;
using It = Ltbl::iterator;
using ConstIt = Ltbl::const_iterator;
const bool it_difference_type =
std::is_same<Ltbl::difference_type, It::difference_type>::value;
const bool it_value_type =
std::is_same<Ltbl::value_type, It::value_type>::value;
const bool it_pointer = std::is_same<Ltbl::pointer, It::pointer>::value;
const bool it_reference = std::is_same<Ltbl::reference, It::reference>::value;
const bool it_iterator_category =
std::is_same<std::bidirectional_iterator_tag,
It::iterator_category>::value;
const bool const_it_difference_type =
std::is_same<Ltbl::difference_type, ConstIt::difference_type>::value;
const bool const_it_value_type =
std::is_same<Ltbl::value_type, ConstIt::value_type>::value;
const bool const_it_reference =
std::is_same<Ltbl::const_reference, ConstIt::reference>::value;
const bool const_it_pointer =
std::is_same<Ltbl::const_pointer, ConstIt::pointer>::value;
const bool const_it_iterator_category =
std::is_same<std::bidirectional_iterator_tag,
ConstIt::iterator_category>::value;
REQUIRE(it_difference_type);
REQUIRE(it_value_type);
REQUIRE(it_pointer);
REQUIRE(it_reference);
REQUIRE(it_iterator_category);
REQUIRE(const_it_difference_type);
REQUIRE(const_it_value_type);
REQUIRE(const_it_pointer);
REQUIRE(const_it_reference);
REQUIRE(const_it_iterator_category);
}
TEST_CASE("empty table iteration", "[iterator]") {
IntIntTable table;
{
auto lt = table.lock_table();
REQUIRE(lt.begin() == lt.begin());
REQUIRE(lt.begin() == lt.end());
REQUIRE(lt.cbegin() == lt.begin());
REQUIRE(lt.begin() == lt.end());
REQUIRE(lt.cbegin() == lt.begin());
REQUIRE(lt.cend() == lt.end());
}
}
TEST_CASE("iterator walkthrough", "[iterator]") {
IntIntTable table;
for (int i = 0; i < 10; ++i) {
table.insert(i, i);
}
SECTION("forward postfix walkthrough") {
auto lt = table.lock_table();
auto it = lt.cbegin();
for (size_t i = 0; i < table.size(); ++i) {
REQUIRE((*it).first == (*it).second);
REQUIRE(it->first == it->second);
auto old_it = it;
REQUIRE(old_it == it++);
}
REQUIRE(it == lt.end());
}
SECTION("forward prefix walkthrough") {
auto lt = table.lock_table();
auto it = lt.cbegin();
for (size_t i = 0; i < table.size(); ++i) {
REQUIRE((*it).first == (*it).second);
REQUIRE(it->first == it->second);
++it;
}
REQUIRE(it == lt.end());
}
SECTION("backwards postfix walkthrough") {
auto lt = table.lock_table();
auto it = lt.cend();
for (size_t i = 0; i < table.size(); ++i) {
auto old_it = it;
REQUIRE(old_it == it--);
REQUIRE((*it).first == (*it).second);
REQUIRE(it->first == it->second);
}
REQUIRE(it == lt.begin());
}
SECTION("backwards prefix walkthrough") {
auto lt = table.lock_table();
auto it = lt.cend();
for (size_t i = 0; i < table.size(); ++i) {
--it;
REQUIRE((*it).first == (*it).second);
REQUIRE(it->first == it->second);
}
REQUIRE(it == lt.begin());
}
SECTION("walkthrough works after move") {
auto lt = table.lock_table();
auto it = lt.cend();
auto lt2 = std::move(lt);
for (size_t i = 0; i < table.size(); ++i) {
--it;
REQUIRE((*it).first == (*it).second);
REQUIRE(it->first == it->second);
}
REQUIRE(it == lt2.begin());
}
}
TEST_CASE("iterator modification", "[iterator]") {
IntIntTable table;
for (int i = 0; i < 10; ++i) {
table.insert(i, i);
}
auto lt = table.lock_table();
for (auto it = lt.begin(); it != lt.end(); ++it) {
it->second = it->second + 1;
}
auto it = lt.cbegin();
for (size_t i = 0; i < table.size(); ++i) {
REQUIRE(it->first == it->second - 1);
++it;
}
REQUIRE(it == lt.end());
}
TEST_CASE("lock table blocks inserts", "[iterator]") {
IntIntTable table;
auto lt = table.lock_table();
std::thread thread([&table]() {
for (int i = 0; i < 10; ++i) {
table.insert(i, i);
}
});
std::this_thread::sleep_for(std::chrono::milliseconds(100));
REQUIRE(table.size() == 0);
lt.unlock();
thread.join();
REQUIRE(table.size() == 10);
}
TEST_CASE("Cast iterator to const iterator", "[iterator]") {
IntIntTable table;
for (int i = 0; i < 10; ++i) {
table.insert(i, i);
}
auto lt = table.lock_table();
for (IntIntTable::locked_table::iterator it = lt.begin(); it != lt.end();
++it) {
REQUIRE(it->first == it->second);
it->second++;
IntIntTable::locked_table::const_iterator const_it = it;
REQUIRE(it->first + 1 == it->second);
}
}
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